Since the addition of the new RPH addon (lovely addon by the way), it seems that any new warden cavelight I spawn cannot be activated using the old conventional way or by way of the new addon's 'activate' button.
[.gob state 0 3] no longer works. It now only accepts 0-1 as a value, and putting in [.gob state 0 1] does make the light appear; however, very dim and only for a brief moment before disappearing, or sometimes not at all (tested with several colors).
So far I haven't been able to find a way around this, but thankfully all of my old lights are still active. You can see here where I spawn in the light and set it to the only possible state - only to have it remain off and invisible - and here where the same color light is fully functional.
I really hope this is just another bug... I really enjoyed the functionality of these lights and how much detail and effect they could add to areas during nighttime.